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Do I have a mechanical or an electrical problem?

Discussion in 'Early CJ5 and CJ6 Tech' started by russo, Nov 22, 2012.

  1. Nov 22, 2012
    russo

    russo Hope is not a method

    Norris, Tennessee
    Joined:
    Oct 28, 2005
    Messages:
    498
    Sunday, I climbed into the '5 for a short trip to the hardware store. I hit the ignition and the starter turned over a couple of times and then stopped with what sounded like a clunk. Now when I turn the key nothing happens. The gages and the accessories that run through the ignition switch still work, and I have right at 12 volts of juice to the starter.

    I thinking my starter (or the solenoid) has gone bad, but I just installed a new unit about four months ago. I hate to just start parts changing. Does anyone have any thoughts? Could it be something other than the starter?

    TNX
     
  2. Nov 22, 2012
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member

    Tantallon, Nova...
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    Nov 22, 2003
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    6,097
    Check to see you have juice to the solenoid when the key is in the start position. If you don't it's a wiring/starter switch issue.

    If there is, is there voltage on the output of the solenoid? If not bad solenoid.

    If there is, how much? 12 volts means an electrical problem with the starter, if it drops down to 10-11 volts there's something mechanical bad.

    H.
     
  3. Nov 22, 2012
    russo

    russo Hope is not a method

    Norris, Tennessee
    Joined:
    Oct 28, 2005
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    498
    Thanks Howard.

    I have voltage at the solenoid. When the key is turned to the start position it drops as if there's a draw on it, but does not go to zero.

    If I am reading your notes correctly, that would mean a solenoid problem, correct?

    R.
     
  4. Nov 22, 2012
    sterlclan

    sterlclan Member

    exploring the...
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    Feb 21, 2009
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    3,204
    to eliminate the solenoid jump across the two main terminals with a heavy wire or two screwdrivers if the starter spins good the solenoid is bad.
     
  5. Nov 22, 2012
    russo

    russo Hope is not a method

    Norris, Tennessee
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    TNX much I'll try that.
     
  6. Nov 22, 2012
    PeteL

    PeteL Member 2020 Sponsor 2019 Sponsor

    Hills of NH
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    "but I just installed a new unit"

    Then that is always the first thing to suspect, in my experience.
     
  7. Nov 22, 2012
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    Nov 27, 2006
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    Stick it in first or reverse and rock the JEEP back and forth, to get the flywheel and starter teeth in a new position and try again.
     
  8. Nov 22, 2012
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member

    Tantallon, Nova...
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    If it drops down thats an indication that the starter is receiving juice, the high current it draws causes the battery voltage to dip down. How far down does it go? If under 10 volts then you might have a bad battery. if sticking around 10 to 11 volts then i'd say your starter is somehow jammed. Try 1960willycj5's advice or pull it to see if it will spin when it's not engaged with the ring gear.

    H.
     
  9. Nov 22, 2012
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    946
    you could always try tapping on the starter with something to see if its stuck. i recently had mine rebuilt at a local shop with a new solenoid just to have my solenoid go out about 2 months later and had to jump the terminals on the solenoid just to get it started sometimes, mine caused an intermittent no start issue but started just fine everytime i jumped the solenoid. with my second new solenoid i havent had an issue yet.
     
  10. Nov 23, 2012
    Phalanxx

    Phalanxx Jeep Newbie

    iraq, texas,...
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    Jan 13, 2004
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    i was just going to say tap the starter and solonoid with a hammer and see if it works. it might free it up from its stuck position. maybe do both, rock and tap and see if it works.
     
  11. Nov 23, 2012
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    Rubber Mallet! Not a hammer!
     
  12. Nov 23, 2012
    russo

    russo Hope is not a method

    Norris, Tennessee
    Joined:
    Oct 28, 2005
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    498
    Thanks to all for the help. Two problems isolated, and the '5 is back on the road. I had a bad terminal on the starter and also low amperage on the battery. Replaced both and both were still under parts of their warranty. So, I got a bit of a price break.
     

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